Digital radio



FIG. 1 is a front perspective view of an ornamental design for a digital radio according to the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines showing of a cable is for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a digital radio, as shown and described. 